Hi Stu,
Dont buy any compressor without a receiver (air tank).
The receiver diserpates the surge from the compressor given you a constant pressure to paint with.
Plus make sure it has a pressure regulator/moisture trap (most compressors will have). The reg allows you to adjust your working pressure and the trap obviously you don't want water blowing through the airbrush and ruining the job.
After use drain the receiver down u dont want any moisture sitting in the receiver as it will corrode the tank from inside out.
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